How to Handle Childhood Fevers and When to Call the Doctor

5 February 2026

Fevers in children can be downright scary for parents. One moment, your little one is playing happily, and the next, they're burning up and lethargic. If you're wondering whether to worry or just let the fever run its course, you're not alone.

Fevers are a natural response, typically a sign that the body is fighting an infection. But as a parent, figuring out what’s normal and when to call the doctor can feel overwhelming. Let’s break it down step by step.

What is a Fever?

A fever is when your child’s body temperature rises above its normal range. The average normal body temperature is about 98.6°F (37°C), but anything above 100.4°F (38°C) is considered a fever.

It’s important to remember that a fever itself isn’t an illness—it’s a symptom that the body is fighting off an infection. In most cases, it’s a good thing! Fever boosts the immune system and helps the body kill off viruses and bacteria.

Common Causes of Fever in Children

Fevers are common in kids and can happen for various reasons, including:

- Viral infections – The most common cause of fever, associated with colds, flu, and other viral illnesses.
- Bacterial infections – Strep throat, ear infections, and urinary tract infections can also cause high fevers.
- Teething – While teething may cause a slight temperature increase, it usually doesn’t lead to a high fever.
- Vaccinations – Some children develop a mild fever after routine childhood vaccinations.
- Overheating – Dressing your child too warmly or prolonged sun exposure can sometimes cause an elevated temperature.

Understanding the cause of the fever can help guide how you handle it.

When Should You Worry About a Fever?

Not all fevers need immediate medical attention, but some red flags signal that you should call a doctor right away.

Call the Doctor If:

- Your baby is under 3 months old and has a fever above 100.4°F (38°C).
- Your child is between 3-6 months old and has a fever above 101°F (38.3°C) with symptoms like irritability or lethargy.
- Your child is older than 6 months and has a fever over 103°F (39.4°C).
- The fever lasts more than 5 days with no improvement.
- Your child shows signs of serious illness, like difficulty breathing, persistent vomiting, dehydration (no wet diapers, dry mouth), or a stiff neck.
- A febrile seizure occurs (more on that later).

If your gut tells you something isn’t right, trust your instincts and call the doctor!

How to Comfort Your Child at Home

Most fevers are harmless and can be managed with some simple at-home care. Here are some tried-and-true ways to help your child feel better.

1. Keep Them Hydrated

Fevers can lead to dehydration, so it’s crucial to keep fluids going. Offer:
- Breast milk or formula (for infants)
- Water
- Electrolyte solutions (like Pedialyte)
- Broth-based soups
- Ice pops for older kids

2. Dress Them Comfortably

Too many layers can trap heat, making the fever worse. Dress your child in light clothing and use a thin blanket if needed.

3. Use Fever-Reducing Medication (If Needed)

Acetaminophen (Tylenol) or ibuprofen (Advil, Motrin) can help lower fever and ease discomfort. Always follow dosing instructions based on your child's weight and age. Never give aspirin to children, as it can cause Reye’s syndrome, a rare but serious illness.

4. Give Them a Lukewarm Bath

A lukewarm sponge bath can help cool them down – but avoid cold baths or alcohol rubs, which can cause shivering and make things worse.

5. Let Them Rest

Even if your child isn’t sleeping, encourage quiet activities like reading or watching a favorite show. Rest helps the body fight off infections.

Can Fevers Cause Seizures?

Some kids between 6 months and 5 years old can experience something called a febrile seizure. This can be terrifying for parents, but they’re usually harmless.

Signs of a Febrile Seizure:

- Your child suddenly shakes uncontrollably for a few minutes.
- They may roll their eyes, become unresponsive, or stiffen up.
- The seizure lasts for less than 5 minutes.

After a seizure, your child may be sleepy but should gradually return to normal. Call your doctor if your child has a seizure for the first time, even if it was brief. Go to the ER if the seizure lasts longer than 5 minutes or is accompanied by breathing difficulties.

Myths About Fevers

There are a lot of misconceptions about fevers. Let’s bust a few fever myths!

1. "High fevers always mean something serious."

Not necessarily! A virus can cause a high fever, while a mild fever could indicate a serious bacterial infection. It’s more about how your child is acting than the fever number itself.

2. "You must bring the fever down immediately."

Fevers help the immune system fight infections. If your child is still eating, drinking, and playing, there’s no urgent need to reduce the fever unless they’re uncomfortable.

3. "A normal temperature means the illness is gone."

A fever may subside, but the illness could still be present. Base your concerns on other symptoms, not just temperature alone.

When Can Your Child Go Back to School or Daycare?

Once the fever is gone for 24 hours without medication, and your child is acting normal again, they’re generally safe to return.

Look out for other symptoms like a lingering cough, runny nose, or fatigue—these could still be contagious, even if the fever is gone.

Final Thoughts

Fevers in children can be nerve-wracking, but they’re usually a sign that the body is doing its job. Most fevers can be managed at home with fluids, rest, and fever reducers when needed.

However, know when to seek help—especially if your child is very young, has a prolonged fever, or seems seriously ill. Trust your instincts as a parent; you know your child better than anyone!

Would you rather be safe than sorry? When in doubt, give your doctor a call.